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1 – 10 of 359
Article
Publication date: 5 June 2017

Chao Wang, Jinju Sun and Yan Ba

The purpose of this paper is to develop a Vortex-In-Cell (VIC) method with the semi-Lagrangian scheme and apply it to the high-Re lid-driven cavity flow.

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Abstract

Purpose

The purpose of this paper is to develop a Vortex-In-Cell (VIC) method with the semi-Lagrangian scheme and apply it to the high-Re lid-driven cavity flow.

Design/methodology/approach

The VIC method is developed for simulating high Reynolds number incompressible flow. A semi-Lagrangian scheme is incorporated in the convection term to produce unconditional stability, which gets rid of the constraint of the convection Courant-Friedrichs-Lewy (CFL) condition; the adaptive time step is used to maintain the numerical stability of the diffusion term; and the velocity boundary condition is readily converted to the vorticity formulation to suit discontinuous boundary treatment. The VIC simulation results are compared with those produced by other gird methods reported in open literature studies.

Findings

The lid-driven cavity flow is simulated from Re = 100 to 100,000. Similar vortex birth mechanisms are exhibited though, but distinct flow characteristics are revealed. At Re = 100 to 7,500, the cavity flow is confirmed steady. At Re = 10,000, 15,000 and 20,000, the cavity flow is periodical with a primary vortex held spatially at the center. In particular, at Re = 100,000 highly turbulent characteristics is first revealed and an analogous primary vortex is formed but in motion rather than stationary, which is caused by the considerable flow separation at all the boundaries.

Originality/value

In the lid-driven cavity, the flow becomes extremely complex and highly turbulent at Re = 100,000, and the analogous primary vortex structure is observed. Boundary layer separation is observed at all walls, producing small vortices and causing the displacement of the analogous primary vortex. Such a finding original and has not yet been reported by other investigators. It may provide a basis for conducting in-depth studies of the lid-driven cavity flow.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 27 no. 6
Type: Research Article
ISSN: 0961-5539

Keywords

Article
Publication date: 1 June 1998

Wong Chi Yan and G.E. Gorman

Twenty Australian academic libraries participated in a recent survey of the use of CD‐ROM products in their acquisitions sections. While CD‐ROM technology was found to be…

1371

Abstract

Twenty Australian academic libraries participated in a recent survey of the use of CD‐ROM products in their acquisitions sections. While CD‐ROM technology was found to be one of the main utilities used in acquisitions, it was evident that not all available functions were fully utilised by acquisitions staff, The project focused on the following issues: the most widely used CD‐ROM products, preferred applications, searching techniques employed, preferred attributes, and desired future developments in CD‐ROM capabilities.

Details

Asian Libraries, vol. 7 no. 6
Type: Research Article
ISSN: 1017-6748

Keywords

Article
Publication date: 19 November 2003

Fengru Li and Nader H. Shooshtari

Applying brand names to international markets remains a challenge to multinational corporations. Consumers’ sociolinguistic backgrounds shape their responses to brand…

Abstract

Applying brand names to international markets remains a challenge to multinational corporations. Consumers’ sociolinguistic backgrounds shape their responses to brand names. This paper uses a sociolinguistic approach as a conceptual framework in understanding brand naming and translating in the Chinese market. The approach promotes that sociolinguistics a) recognizes linguistic competence, b) advances symbolic values imbedded in linguistic forms, and c) renders attached social valence to cultural scrutiny. Three brand‐naming cases in China are presented for discussion, which may benefit multinational corporations on brand decisions involving Chinese consumers.

Details

Multinational Business Review, vol. 11 no. 3
Type: Research Article
ISSN: 1525-383X

Keywords

Article
Publication date: 3 August 2021

Diana Lorenzo-Afable, Smita Singh and Marjolein Lips-Wiersma

This paper examines the ethical tensions in social entrepreneurship (SE) research by focusing on the ethical consequences of obtaining ethics approval in a university in…

Abstract

Purpose

This paper examines the ethical tensions in social entrepreneurship (SE) research by focusing on the ethical consequences of obtaining ethics approval in a university in the developed world while executing fieldwork for data collection in a developing country. It aims to offer insight into ethical research practice to protect vulnerable research participants from being further silenced and marginalised by the dominant social order that developed world universities embody.

Design/methodology/approach

The ethical tensions are described through narratives drawn from a Filipino Ph.D. candidate's experience. The candidate obtained ethics approval from the university in New Zealand and collected interview data from social enterprise beneficiaries in the Philippines. A critical reflexive lens carves a space for a deepened understanding of these ethical tensions.

Findings

This paper offers critical insights into ethical SE research involving participants from vulnerable communities. These insights suggest that closer consideration needs to be given to contextual sensitivity, particularly on the part of researchers and research ethics committees, in crafting ethical data collection protocols. Findings also show how it is important for the indigenous researcher to filter ethical protocols through their local knowledge.

Originality/value

The paper uses critical reflexivity to examine ethical tensions in SE research involving vulnerable beneficiaries. It offers insights into ethical research procedures and practices that engender mindfulness of the contextual and relational aspects of doing SE research in the developing world.

Details

Qualitative Research in Organizations and Management: An International Journal, vol. 16 no. 3/4
Type: Research Article
ISSN: 1746-5648

Keywords

Article
Publication date: 15 May 2017

Xuejun Fan and De Du

Focusing on the spillover effects between the CSI 500 stock index futures market and its underlying spot market during April to September 2015, the purpose of this paper…

Abstract

Purpose

Focusing on the spillover effects between the CSI 500 stock index futures market and its underlying spot market during April to September 2015, the purpose of this paper is to explore whether Chinese stock index futures should be responsible for the 2015 stock market crash.

Design/methodology/approach

Using both linear and non-linear econometric models, this paper empirically examines the mean spillover and the volatility spillover between the CSI 500 stock index futures market and the underlying spot market.

Findings

The results showed the following: the CSI 500 stock index futures market has significant one-way mean spillover effect on its spot market. The volatility in CSI 500 stock index futures market also has a significant positive spillover effect on its spot stock market, and the mean value of dynamic correlation coefficient between the two market volatility is 0.4848. The spillover effect of the CSI 500 stock index futures market on the underlying spot market is significantly asymmetric, characterized by relatively moderate and slow during the period of the markets rising, yet violent and rapid during the period of the markets falling. The findings suggest that although the stock index futures itself was not the “culprit” of Chinese stock market crash in 2015, its existence indeed accelerated and exacerbated the stock market’s decline under the imperfect trading system.

Originality/value

Different from the existing literature mainly focusing on CSI 300 stock index futures, this paper empirically examines the impact of the introduction of CSI 500 stock index futures on 2015 Chinese stock market crash for the first time.

Details

China Finance Review International, vol. 7 no. 2
Type: Research Article
ISSN: 2044-1398

Keywords

Article
Publication date: 1 September 2017

Kanhua Yu, Jian Gong, Yan Jing, Shuqian Liu and Shihao Liang

Many cities of various types are distributed in the large area of mountainous regions in China. In these cities, there are acute contradictions between man and earth…

Abstract

Many cities of various types are distributed in the large area of mountainous regions in China. In these cities, there are acute contradictions between man and earth. Considering that the space growth mode of mountainous cities is widely different from that of flatland cities, the fractal method was adopted in the research aimed at demarcating the urban growth boundary of mountainous cities. The fractal features of the investigated mountainous cities in space were figured out via inference from their function, dimension, region, grade, and environment, and the fractal mode and conceptual framework of urban growth boundary of Qin-Ba mountainous region were constructed according to some concepts and methods such as fractal dimension, fractal network, and fractal order. In the research, the traditional urban growth boundary form-was decomposed into scattered points (point form), paths (linear form), and patches (plane form) to form the fractal theory units for the research of urban growth boundary, and the leading idea, procedure, and control method for “fractal demarcation of urban growth boundary” were established to provide strategies for demarcation of urban space growth boundary of Qin-Ba mountainous region.

Details

Open House International, vol. 42 no. 3
Type: Research Article
ISSN: 0168-2601

Keywords

Article
Publication date: 14 February 2008

Jin Chen, Aifang Guo and Yan Mo

The purpose of this paper is to analyse the operation pattern of the virtual university‐industry‐government (GUI) platform from the perspective of knowledge.

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Abstract

Purpose

The purpose of this paper is to analyse the operation pattern of the virtual university‐industry‐government (GUI) platform from the perspective of knowledge.

Design/methodology/approach

Following a theoretical framework, the case of the China Zhejiang Online Technology Market (ZJOTM) is analyzed, which has been viewed as a model of the national virtual GUI platform. The operation pattern and effect of ZJOTM are discussed. The material and data are collected mainly from ZJOTM web site.

Findings

According to the types of knowledge interaction between university and industry, this paper recognizes the context needed for knowledge interaction between industry and university as “virtual ba”, “physical ba” and “practice ba”. The virtual GUI platform just provides a virtual ba for knowledge interaction between industry and university. However, only “virtual ba” is not sufficient, “physical ba” and “practice ba” are also needed. Therefore, the operation of virtual GUI should utilize the complementary action of physical ba and practice ba. Moreover, it is better to deploy the ba flexibly according to the knowledge and sector characteristic.

Originality/value

The paper specifies the innovation knowledge rich in industry and university and the knowledge interaction context needed, that provides a favourable framework to study the operation pattern of the virtual GUI platform. The findings also have important implications for government policy makers, university and industry practice for designing and implementing knowledge‐base innovation strategies.

Details

Journal of Technology Management in China, vol. 3 no. 1
Type: Research Article
ISSN: 1746-8779

Keywords

Open Access
Article
Publication date: 28 July 2020

Yongmu Jiang, Lu Yang and Zhang Xiaolei

With the development of social productive forces and the advancement of agricultural practices since the founding of New China, the connotation of agricultural…

Abstract

Purpose

With the development of social productive forces and the advancement of agricultural practices since the founding of New China, the connotation of agricultural modernization with Chinese characteristics has undergone a process from formation to continuous expansion and deepening.

Design/methodology/approach

Its evolution can be roughly divided into four stages: the exploration stage, the formation stage, the establishment stage and the deepening stage. The historical evolution of the connotation of agricultural modernization with Chinese characteristics demonstrates four typical characteristics, namely increasingly scientific logical premise, continuously diversified orientations, increasingly improved core contents and progressively maturing strategies of development.

Findings

The achievements of agricultural modernization have laid a solid foundation for China's industrial modernization and the rapid development of the national economy. Meanwhile, the authors have identified through practical exploration a path of agricultural modernization with Chinese characteristics. In recent years, academic research on the connotation of agricultural modernization with Chinese characteristics has gradually heated up, and relevant achievements have emerged constantly.

Originality/value

The Communist Party of China (hereinafter “CPC”) has placed considerable emphasis on agricultural issues and has been committed to promoting agricultural modernization since the founding of New China. Through long-term persistence and unremitting efforts, China has made remarkable achievements in agricultural development: significantly improved agricultural production conditions and agricultural output capacity, constantly optimized agricultural structure and steadily increased the income of farmers.

Article
Publication date: 4 September 2017

Yan Li, Zhi Xin Ba, Yong Liang Li, Yan Ge and Xi Chang Zhu

This paper aims to investigate the inhibition effect of sodium silicate (SS), sodium alginate (SA) and sodium tungstate (ST) on the corrosion behavior of AZ91D magnesium…

Abstract

Purpose

This paper aims to investigate the inhibition effect of sodium silicate (SS), sodium alginate (SA) and sodium tungstate (ST) on the corrosion behavior of AZ91D magnesium alloy in 3.5 per cent NaCl solution through polarization curve test at room temperature, electrochemical impedance spectroscopy and weight loss measurement.

Design/methodology/approach

The influence of SA concentration on the inhibition efficiency of the corrosion inhibitor was mainly analyzed. The corrosion morphology and inhibition mechanism of the samples were also analyzed with scanning electron microscopy and energy-dispersive spectroscopy.

Findings

The results show that with the increase of SA concentration, the corrosion inhibition first increases and then decreases. When SA concentration is 0.03 mol/L, the inhibition efficiency is the highest, reaching 98 per cent. The adsorption film formed by SA and other deposition films produce a synergistic effect on the improvement of corrosion resistance of AZ91D magnesium alloy.

Originality/value

The adsorption film formed by SA with other deposition films produces a synergistic effect on the improvement of corrosion resistance of AZ91D magnesium alloy. With the increase of SA concentration, the corrosion inhibition first increases and then decreases. When the concentrations of SA, SS and ST are 0.03 mol/L, 0.015 mol/L and 0.02 mol/L, respectively, the inhibition efficiency of the inhibitor is the highest, reaching 98 per cent.

Details

Anti-Corrosion Methods and Materials, vol. 64 no. 5
Type: Research Article
ISSN: 0003-5599

Keywords

Article
Publication date: 14 February 2022

Bushra K. Mahadin, Amjad Abu Elsamen and Mohammed Ismail El-Adly

This study aims to examine the roles of advertising (ADV) and sales promotion (SP) in creating airline brand equity (BE) in the UAE, and to test the mediational effect of…

Abstract

Purpose

This study aims to examine the roles of advertising (ADV) and sales promotion (SP) in creating airline brand equity (BE) in the UAE, and to test the mediational effect of customer perceived value on the proposed relationships. Additionally, the study examines the outcomes of airline BE (i.e. trust, satisfaction and loyalty).

Design/methodology/approach

A structured and self-administered survey was used targeting 234 passengers, from which 197 were valid for the analysis. Exploratory and confirmatory factor analyses were used to assess the research constructs unidimensionality, validity and composite reliability.

Findings

The empirical findings support the direct relationship between ADV and BE. Perceived value fully mediates the effect of SP on BE. In addition, BE positively affects trust, satisfaction and loyalty.

Research limitations/implications

Future research could investigate BE and perceived value as multidimensional constructs. Additionally, future research should expand the effect of other variables such as airline type, airline class and other marketing mix elements.

Practical implications

The findings from this research highlight the importance of both ADV and sale promotion in enhancing airline BE, and the pivotal role of perceived value.

Originality/value

The originality of this research is highlighted in conceptualizing a parsimonious model of the preceding constructs (i.e. ADV, SP, customer perceived quality) and subsequent constructs of BE (i.e. customer trust, customer satisfaction, customer loyalty), which has never been investigated collectively in one model in the literature particularly in the airline’ context of emerging economies such as UAE.

Details

International Journal of Organizational Analysis, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1934-8835

Keywords

1 – 10 of 359